February weather forecast
Rio das Ostras, Brazil

The last month of the summer, February, is another warm month in Rio das Ostras, Brazil, with an average temperature fluctuating between 29.1°C (84.4°F) and 22.9°C (73.2°F).

Temperature

February is the month when Rio das Ostras experiences its warmest temperatures, averaging a high of 29.1°C (84.4°F) and a low of 22.9°C (73.2°F).

Heat index

The average heat index in February is evaluated at a very hot 35°C (95°F). Incorporate special precautions, risk of heat exhaustion and heat cramps is substantial. Sustained activity could cause heatstroke.
Consider that heat index readings are for situations in the shade and light wind. A rise of up to 15 Fahrenheit (8 Celsius) degrees in the heat index could result from direct sunlight.
Note: The heat index, also known as 'real feel' or 'apparent temperature', gives an indication of how one might feel in terms of heat after considering humidity. Factors such as metabolic variations, being pregnant, and physical activity can impact an individual's weather perception. Consider that direct sun exposure can intensify the felt heat, adding potentially 15 Fahrenheit (8 Celsius) degrees to the heat index. Heat index values are of high significance for children. In general, children are more at risk than adults because they sweat less. Furthermore, the large skin surface compared to their small bodies and the high heat production due to their actions contribute to this vulnerability.
The human body has a built-in cooling mechanism through perspiration; evaporating sweat dissipates the excess heat. In high relative humidity, the body's ability to evaporate heat is diminished, resulting in a heightened feeling of warmth. Heat-related challenges, like dehydration, can be anticipated when body heat isn't managed effectively.

Humidity

The average relative humidity in February is 81%.

Rainfall

In Rio das Ostras, Brazil, during February, the rain falls for 16 days and regularly aggregates up to 87mm (3.43") of precipitation. In Rio das Ostras, Brazil, during the entire year, the rain falls for 179.7 days and collects up to 674mm (26.54") of precipitation.

Sea temperature

In February, the average sea temperature in Rio das Ostras is 25°C (77°F).
Note: For any water activity, surface water temperatures from 25°C (77°F) to 29°C (84.2°F) are deemed perfect and extremely pleasing for enduring enjoyment.

Daylight

The average length of the day in February in Rio das Ostras, Brazil, is 12h and 50min.
On the first day of February, sunrise is at 05:28 and sunset at 18:34. On the last day of the month, sunrise is at 05:43 and sunset at 18:16 -03.

Sunshine

February has the most sunshine of the year, with an average of 9h of sunshine.

UV index

The average daily maximum UV index in February in Rio das Ostras is 6. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 6 in February converts into the following recommendations:
Prevent overexposure. Protection from the sun's harmful effects is needed. Avoid direct Sun exposure and stay in the shade between 10 a.m. and 4 p.m., a time when UV radiation is most intense, noting that not all shade structures offer full protection. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The Sun's UV rays become stronger due to reflections from water and sand.